Cloud Computing e book

An ebook/pdf doc on Cloud Computing which contains the following 1. What is Cloud Computing ? and types of cloud (private, public ? 2. Whats kind of services in cloud computing ? SaaS, Iaas etc. 3. When to use Cloud Computing ? or benefits ? all kinds of advantages for moving to cloud ? 3. Case Studies and examples (with links) of Cloud Computing ? 4. Vendors and products in Cloud Computing ? especially Google, Microsoft, HP, IBM, Rackspace, VMware, Amazon, Salesforce ? also who gains and who loses out from cloud computing ? 5. When NOT to use Cloud Computing ? or disadvantages ? like security ? and issues with cloud computing ? 6. Numbers ? and estimates ? IT budgets w.r.t. cloud computing ? and forecasts for cloud computing ? 7. How to tell when its cloud computing and when its not cloud computing ?